AutoCodes – Generic – P15FA

P15FA Code - External Engine Off Timer Incrementation Too Fast During Engine Running

Quick Answer

The diagnostic function compares the internal timers of the DME and the instrument cluster while the engine is running. Common causes include Collateral fault resulting from fault memory entries in the Digital Motor Electronics (DME) and/or instrument cluster. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P15FA indicates External Engine Off Timer Incrementation Too Fast During Engine Running.
Common causes: Common causes include Collateral fault resulting from fault memory entries in the Digital Motor Electronics (DME) and/or instrument cluster.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,175

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P15FA Description

The diagnostic function compares the internal timers of the DME and the instrument cluster while the engine is running. The Engine Control Module (ECM) monitors the Digital Motor Electronics (DME) and/or instrument cluster memory entries. The ECM sets the OBDII code when the DME and/or instrument cluster memory entries is not to factory specifications.

OBDII Code P15FA - External Engine Off Timer Incrementation Too Fast During Engine Running - AutoCodes.com — P15FA Code - External Engine Off Timer Incrementation Too Fast During Engine Running

What does this mean?

What are the Possible Causes of the DTC P15FA?

Collateral fault resulting from fault memory entries in the Digital Motor Electronics (DME) and/or instrument cluster

How to Fix the DTC P15FA?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P15FA code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P15FA code?

Need more information on how to fix the P15FA code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15FA code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P15FA BMW — External Engine Off Timer Incrementation Too Fast During Engine Running
P15FA Buick — Wheel Slip Status Signal Message Counter Incorrect
P15FA Cadillac — Wheel Slip Status Signal Message Counter Incorrect
P15FA Chevrolet — Wheel Slip Status Signal Message Counter Incorrect
P15FA GMC — Wheel Slip Status Signal Message Counter Incorrect
P15FA MINI — External Engine Off Timer Incrementation Too Fast During Engine Running

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P15FA Code

1. What are the common symptoms of OBDII code P15FA?

The common symptoms of code P15FA include the engine running rough, poor fuel efficiency, and potential stalling or difficulty starting the vehicle.

2. What causes the OBDII code P15FA to trigger?

This code is typically triggered when the external engine off timer increments too quickly during engine running, indicating an issue with the engine control module's timer function.

3. How serious is the OBDII code P15FA?

While this code may not cause immediate harm to the vehicle, it can lead to decreased engine performance and fuel efficiency over time if left unresolved.

4. Can I continue driving with the OBDII code P15FA present?

It is not recommended to ignore this code and continue driving, as it can impact your vehicle's overall performance and potentially lead to more severe issues if not addressed promptly.

5. What are some possible repair tips for OBDII code P15FA?

Some repair tips for this code include checking and potentially replacing the engine control module, inspecting the wiring and connectors related to the external engine off timer, and resetting the fault codes after making necessary repairs.

6. How can I diagnose the OBDII code P15FA?

Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, followed by a thorough inspection of the engine control module, wiring, and related components to identify the root cause of the issue.

7. Can a DIY enthusiast fix the OBDII code P15FA?

While some basic troubleshooting steps can be taken by a DIY enthusiast, resolving this code may require advanced diagnostic tools and expertise, so it is advisable to seek professional help for an accurate repair.

8. Will resetting the fault codes make the OBDII code P15FA disappear permanently?

Resetting the fault codes may temporarily clear the code, but if the underlying issue causing P15FA is not addressed and repaired, the code is likely to reappear upon driving the vehicle.

9. How much does it cost to fix the OBDII code P15FA?

The cost of fixing this code can vary depending on the extent of the issue, the parts needing replacement, and the labor charges of the repair shop. It's recommended to get a diagnostic evaluation to determine the exact cost.

10. Is the OBDII code P15FA specific to certain vehicle makes and models?

While this code can be found in various OBDII-compliant vehicles, it is not limited to a specific make or model. It is important to refer to the vehicle's specific diagnostic manual for accurate information about code P15FA.